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  <section id="ibm-cvc">
<span id="device-tree-ibm-cvc"></span><h1>ibm,cvc<a class="headerlink" href="#ibm-cvc" title="Permalink to this headline">¶</a></h1>
<p>This describes the code (a.k.a container verification code) that skiboot uses
to verify signed firmware blobs. Each ibm,cvc child node describes CVC service,
which has a version and offset (reg).</p>
<p>Added in the device tree from <code class="docutils literal notranslate"><span class="pre">ibm,secureboot-v2</span></code>.</p>
<section id="required-properties">
<h2>Required properties<a class="headerlink" href="#required-properties" title="Permalink to this headline">¶</a></h2>
<div class="highlight-none notranslate"><div class="highlight"><pre><span></span>compatible:      should be &quot;ibm,container-verification-code&quot;

memory-region:   this points to the reserved memory where the
                 container-verification-code is stored.
</pre></div>
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</section>
<section id="example">
<h2>Example<a class="headerlink" href="#example" title="Permalink to this headline">¶</a></h2>
<div class="highlight-dts notranslate"><div class="highlight"><pre><span></span><span class="nc">ibm,cvc</span> <span class="p">{</span>
        <span class="nf">phandle</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x10f</span><span class="p">&gt;;</span>
        <span class="nf">#address-cells</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x1</span><span class="p">&gt;;</span>
        <span class="nf">#size-cells</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x0</span><span class="p">&gt;;</span>
        <span class="nf">compatible</span> <span class="o">=</span> <span class="s">&quot;ibm,container-verification-code&quot;</span><span class="p">;</span>
        <span class="nf">memory-region</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0xaa</span><span class="p">&gt;;</span>

        <span class="nc">ibm,cvc-service</span><span class="nf">@40</span> <span class="p">{</span>
                <span class="nf">phandle</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x110</span><span class="p">&gt;;</span>
                <span class="nf">compatible</span> <span class="o">=</span> <span class="s">&quot;ibm,cvc-sha512&quot;</span><span class="p">;</span>
                <span class="nf">reg</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x40</span><span class="p">&gt;;</span>
                <span class="nf">version</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x1</span><span class="p">&gt;;</span>
        <span class="p">};</span>

        <span class="nc">ibm,cvc-service</span><span class="nf">@50</span> <span class="p">{</span>
                <span class="nf">phandle</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x111</span><span class="p">&gt;;</span>
                <span class="nf">compatible</span> <span class="o">=</span> <span class="s">&quot;ibm,cvc-verify&quot;</span><span class="p">;</span>
                <span class="nf">reg</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x50</span><span class="p">&gt;;</span>
                <span class="nf">version</span> <span class="o">=</span> <span class="p">&lt;</span><span class="mh">0x1</span><span class="p">&gt;;</span>
        <span class="p">};</span>
<span class="p">};</span>
</pre></div>
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<li><a class="reference internal" href="#required-properties">Required properties</a></li>
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